<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>用户注册</title>
</head>

<body>
    <table width=“600px” align="center">
        <caption>
            <h1>用户注册</h1>
        </caption>
        <tbody>
            <tr>
                <td>用户名：</td>
                <td>
                    <input type="text" placeholder="请输入用户名">
                </td>
            </tr>
            <tr>
                <td>密码：</td>
                <td>
                    <input type="password" placeholder="请输入密码">
                </td>
                <td>
                    <input type="radio" name="sex" value="m">男
                    <input type="radio" name="sex" value="f">女
                    <input type="radio" name="sex" value="o" checked>保密
                </td>
            </tr>
        </tbody>
</body>

</html>